Does the Sportsways 1/2 Straight valve fit M18 composite tanks?
- I was removing valves on several tanks to take to Hydro testing and noticed how similar the threads looked on my Sportsways 1/2" straight thread valves to the threads on my composite fireman's tank. I believe the fireman's tank is M18-1.5 thread but I may be wrong. Anyway, I tried swapping the valves and found the the firemans valve fit my sportsways tank and my Sportsways valve fit my firemans tank. There didn't seem to be any slop. The only difference was the fit of the O-ring. The firemans tank seems to have a thicker O-ring.
- The firemans valve is made of aluminum and the threaded section is longer
- The valves interchange with no wobble or binding. Just different O-rings.
- Leakage... I tried filling a little air into these the fireman's tank with the SW valve but leaked around the O-ring. Unfortunately I didn't have the right sized O-ring to make it seal.
- Any Thoughts?